/* ===================================================================
   Patient Observation Tracker — Global Styles
   Clean, functional; pixel-perfection not required.
   =================================================================== */

*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

:root {
    --primary:   #1a73e8;
    --primary-dk:#1558b0;
    --danger:    #d93025;
    --success:   #188038;
    --warning:   #f9ab00;
    --bg:        #f8f9fa;
    --card-bg:   #ffffff;
    --border:    #dadce0;
    --text:      #202124;
    --muted:     #5f6368;
    --radius:    6px;
}

body {
    font-family: "Google Sans", Roboto, Arial, sans-serif;
    background: var(--bg);
    color: var(--text);
    font-size: 14px;
    line-height: 1.5;
}

/* ---- Navigation ---- */
nav {
    background: var(--primary);
    color: #fff;
    padding: 0 24px;
    display: flex;
    align-items: center;
    gap: 32px;
    height: 56px;
    box-shadow: 0 2px 4px rgba(0,0,0,.2);
}
nav .brand { font-size: 18px; font-weight: 600; white-space: nowrap; }
nav a { color: rgba(255,255,255,.85); text-decoration: none; font-size: 14px; }
nav a:hover, nav a.active { color: #fff; border-bottom: 2px solid #fff; padding-bottom: 2px; }

/* ---- Layout ---- */
.container { max-width: 1100px; margin: 24px auto; padding: 0 16px; }
.page-title { font-size: 22px; font-weight: 600; margin-bottom: 20px; }

/* ---- Cards ---- */
.card {
    background: var(--card-bg);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 20px;
    margin-bottom: 20px;
}
.card h2 { font-size: 16px; font-weight: 600; margin-bottom: 14px; color: var(--text); }

/* ---- Two-column grid ---- */
.grid-2 { display: grid; grid-template-columns: 1fr 1fr; gap: 20px; }
@media (max-width: 700px) { .grid-2 { grid-template-columns: 1fr; } }

/* ---- Forms ---- */
.form-group { margin-bottom: 12px; }
.form-group label { display: block; font-weight: 500; margin-bottom: 4px; }
.form-group input,
.form-group select,
.form-group textarea {
    width: 100%;
    padding: 8px 10px;
    border: 1px solid var(--border);
    border-radius: var(--radius);
    font-size: 14px;
    font-family: inherit;
    outline: none;
    transition: border-color .15s;
}
.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus { border-color: var(--primary); }
.form-group textarea { resize: vertical; min-height: 60px; }

/* ---- Buttons ---- */
.btn {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 8px 16px;
    border: none;
    border-radius: var(--radius);
    font-size: 14px;
    font-family: inherit;
    cursor: pointer;
    font-weight: 500;
    transition: background .15s, box-shadow .15s;
}
.btn-primary { background: var(--primary); color: #fff; }
.btn-primary:hover { background: var(--primary-dk); }
.btn-danger  { background: var(--danger);  color: #fff; }
.btn-danger:hover  { background: #b3261e; }
.btn-success { background: var(--success); color: #fff; }
.btn-success:hover { background: #0d6b2e; }
.btn-outline {
    background: transparent;
    color: var(--primary);
    border: 1px solid var(--primary);
}
.btn-outline:hover { background: #e8f0fe; }
.btn-sm { padding: 4px 10px; font-size: 13px; }

/* ---- Tables ---- */
table { width: 100%; border-collapse: collapse; font-size: 13px; }
thead th {
    background: var(--bg);
    border-bottom: 2px solid var(--border);
    padding: 8px 10px;
    text-align: left;
    font-weight: 600;
    color: var(--muted);
    white-space: nowrap;
}
tbody td {
    padding: 8px 10px;
    border-bottom: 1px solid var(--border);
    vertical-align: top;
}
tbody tr:last-child td { border-bottom: none; }
tbody tr:hover { background: #f1f3f4; }

/* ---- Badges ---- */
.badge {
    display: inline-block;
    padding: 2px 8px;
    border-radius: 12px;
    font-size: 11px;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: .5px;
}
.badge-active   { background: #e6f4ea; color: var(--success); }
.badge-rejected { background: #fce8e6; color: var(--danger); }
.badge-high     { background: #e6f4ea; color: var(--success); }
.badge-medium   { background: #fef7e0; color: #8a6c00; }
.badge-low      { background: #fce8e6; color: var(--danger); }
.badge-quant    { background: #e8f0fe; color: var(--primary); }
.badge-qual     { background: #f3e8fd; color: #7627bb; }

/* ---- Alerts ---- */
.alert {
    padding: 10px 14px;
    border-radius: var(--radius);
    margin-bottom: 14px;
    font-size: 13px;
}
.alert-error   { background: #fce8e6; color: var(--danger); border-left: 4px solid var(--danger); }
.alert-success { background: #e6f4ea; color: var(--success); border-left: 4px solid var(--success); }
.alert-info    { background: #e8f0fe; color: var(--primary); border-left: 4px solid var(--primary); }

/* ---- Inline inferences list ---- */
.inference-list { list-style: disc; padding-left: 20px; margin-top: 8px; }
.inference-list li { padding: 2px 0; }

/* ---- Misc ---- */
.empty-state { text-align: center; color: var(--muted); padding: 40px 0; font-style: italic; }
.muted { color: var(--muted); font-size: 12px; }
.flex-end { display: flex; justify-content: flex-end; }
.mt-8 { margin-top: 8px; }
.mb-0 { margin-bottom: 0; }
.back-link { display: inline-block; margin-bottom: 16px; color: var(--primary); text-decoration: none; font-size: 13px; }
.back-link:hover { text-decoration: underline; }